Was going to point out the previous discussion, but apparently there was none.[0] It's a shame because it's a great tool and makes managing these services on your mac so much easier. I used to write down the commands homebrew displays after installing a service but this is so much more comfortable.
Having recently dealt with installing launchctl plists again (aka Googling StackOverflow because I can never remember how to do it, then created a gist for it, but I do this so rarely that next time I'll forget I made a gist for it and will end up Googling again), this app is a long time coming and very welcomed.
[0] https://news.ycombinator.com/item?id=7204990